Singeing device for textile fabrics



Jan. 30, 1923.

- Smezms DEVICE FOR TEXTILE FABRICS.

FILED DEc. 2. 1921 I 2 SHEETS'SHEET I v 1,443,587 Q w. OSTHOFF.

Jan. 30, 1923. 1,443,587

W. OSTHOFF. SINGEINODSVICE FOR TEXTILE FABRICS FILED Dec. 2. 1921. 2 SHEETS-SHEET 2 3a wk Q I 3a l atente-d Jan. 30, 1923.

nniran stares.

tints? HALTER, OSTHOFF, OF BARMEN, GERMANY.

SINGEING DEVICE FOR TEXTILE FABRICS.

Application filed December 2, 1921. Serial No. 519,418.

1 0 all whom it may concern:

Be it known that I, lVaLrnn erman citizen, residing at Barmen, Germany, have invented certain new and useful Improvements in Singeing Devices for Textile Fabrics, of which the following is a specification.

My invention relates to singeing devices for textile fabrics and more particularly to devices heated by gas and it is an object of my invention to provide for a more economical fuel consumption in such devices.

According to my invention, this objectis substantially achieved by providing guide walls on both sides of and at a certain distance from a burner extending across the entire Width of the device. The guide walls extend in a vertical direction beyond the base of the flame and deflect in an upward direction the hot gases which tend to flow away from the flame in a lateral direction. The distance between the guide. walls and the centre of the burner and their height are such that the guide walls surround the lower edges of a plate-shaped or the lower surface of a cylindrical singeing body. The guide walls may be of sheet metal, fire bricks or the like.

By these means, the hot gases are caused to flow around the singeing body and along the fabric to be singed and to efficiently act upon it. The time required for heat 'ing the singeing body before starting the operation is considerably reduced and a material saving of time andfuel is effected. I prefer providing a further guide wall at the side where the fabric enters the dcvice, said wall extending beneath the fabric and substantially in parallel to it and guiding the hot gases toward the incomingfabric, which is thereby subjectedto a preliminary "drying and heating action. A. similar wall may also be provided at the point where the fabric leaves the device.

Preferably, several rows of openings are provided between the burner and the vertical guide walls which are amply supplied with compressed air serving to assist the secondary combustion. By thesemeans not only the fuel is burned more completely but the gases developed by singeing the textile fibres are consumed as w ll.

In the drawings afiixed to this specification and forming part thereof 1 have illustrated my invention as applied to a burner adapted to be used either without or in combination with flat or cylindrical singcing bodies, the illustrations being merely given by way of example. Tn the drawings Fig. 1 is a cross section of the burner with a singeing. plate placed thereon, the

plate being in. course of being heated up.-

if 1g. 2 1s a like view showing means for preliminary drying of the fabric, Fig. 3 is a cross section of a modified device provided with a singeing cylinder, and Fig. 4 is a similar-view of the burner with the singeing body removed.

Referring to Fig. l, 1 is the burner proper which is surrounded by a casing 2. The

burner 1 comprises two longitudinal channels 9 and 11 which are connected at one end by a passage 10, and an upper longitndinal channel 13 connected with the channelll by a passage 12 at the other end. a v.

A mixture of gas and air is supplied to the burner through these channels and passages. The mixture enters the channel 9 at one end and leaves it at the other end in order to pass into channel 11, which it flows through in opposite direction. At

the other end of this, channelfit passes:

through the pas'sagelQ into the channel 13.

This channel is provided at the top with a narrow slot 1% from whichtlie flame 5 is- J sues. The burner 1 is strongly'heated dur-,

ing operation so that the combustible mirtture iszpreheated by being repeatedly conducted through the burner in opposite directions.

The casing 2 which surrounds'theburner l afterthe manner of a jacket 1s provided with vertical guide walls 3 on either side of the slot 1% which deflect the hot gases spreading on both sides of the flame in an upward direction and toward the fabric 21 to be singed. This deflection of the hot gases may be effected directly by the' walls as shown in Fig. 4 or by aid of linings 9,"- of fire brick or other suitable material, as illustrated in Figs. 1 303. Obviously exchangeable sheet metal walls can'be substituted for the bricks.

In the plate singeingdevice illustrated in Fig-s1 and 2, dis anexchangeable singeing plate across which the fabric 21 to be singed is carried. The guide walls which are here formed by bricks 3, are so arranged as to surround the edges of the sin'gcing plate deflected in an upward direction by the walls 95 do not proceed further in this direction but adhere to the outer curvec surface of the plate 42, as indicated by the arrows 6. Vi hen there is no fabric on the de'ice, for instance, during the heating up the i follow exactly the contour of the they meet at the centre 8. of air which are produced by the ri the hot gases follow the gases about the plate l. as indicated by arrows i so that also those gases which flow along the upper surface of the plate t are burned coiuplct This act together with the circlnustancc that the plate is completely enveloped by the hot 5 F'JS, results in a very considerable reduction of the time required for heating-up, thus saving time and fuel.

Fig. 2 illustrates the operation of the plate singeing device. 21 is the fabric to be singed which is drawn across the heated plate i from the right to the left as indicated by the a row and guided by the rollers 19"", 19 and 1. The hot gases tend to adhere to the singeing plate f as before, but are prevented by the fabric from moving in. an upward direction so that they are partly doubled up and partly flow in the direction of the arrows 6 and 6". On the right, where the fabric enters the device, a guide plate 20 is provided which is connected to the vertical guide plate 3 and extends substantially in horizontal direction. This plate guides the gases which flow as indicated by the arrow 6, toward and in opposite direction to the incoming fabric so'that the fabric is preheated and subjected to a prelimiiniry drying. In this manner the hot gases leaving the device are utilised very e't'ectiyely. If desired another guide plate 26 may be provided on the other side of the device in order to maintain the gases leaving on this side in contact with the fabric for a longer time.

The chamber it) formed by the casing 2 about the burner 1 serves for supplying and preheating the secondary combustion air which is introduced through an opening 15 in the bottom of the casing 2. In the upper wall 17 of the casi 2 several rows of ports 18 are provided through which the secondary combustion air, after having been pre heated by the hot walls of the burner 1 and the ports 18, enters the chambers which are formed at both sides of the flame 5. By the ports 18 which are arranged in several successive rows, so much preheated air is mixed with the hot gases that not only the mixture issuing from the slot is is completely burned but there still remains an excess of air, lin consequence thereof. the gases 121041 by the singeing of the textile fibres are supplied with an amount of air which suliices for complete combustion in thev immediate vicinity of the fabric so that the t-producod by the textile fabric on being singed is also utilized in my device. The quantity of combustible mixture and secondary air can be regulated by valves or cocks, not shown). The regulation is pre erably n' cted i l manner t duce a i j and strc rue during heating-up WlllCll. shown in 1 completely surrounds the plate l on all sides so that the plate heated rapidly. hen the plate l has reached the predetermined temperature, the supply of combun. lc lilifiliill'Q may be reduced =n qu nti y and he supply of SQ(' oudary was-Jed i.uultanemisly. hen the fabric has been introduced, the hot gases will flow as indicated by the arrows in Fig. 2.

lVhen it is desired to use the device in combination with a cylindrical instead of a plate-shaped singeing body. the singeing plate is exchanged for a singeing cylinder 22. as shown in Fig. The c linder 22 is :-ported in bearin s {not shown) arranged at the ends of the singeing device. Additional guide walls 3" are provided which adapt the device to the differentform of the siugeing body and cr. the hot gases to follow the same course as indicated in Figs. 1 and 2.

in order to effectively preheat the secondary air, the casing 2 may be tilled with some granular substance such as large pebbles 23 which may also be placed on the plate 17, as shown in Fig. 3. In this manner the area of contact between the air to be preheated and the arts giving off heat is greatly increased and the path of the air is lengthened so that it has a better opportunity for absorbing air its surroundings.

The example of Fig. 4 shows the device with the singeing body and the bricks 3, 3"

removed. It new forms a so called flame singemg device in which the flame acts directly on the fabric 21.

I wish it to be understood that l do not burner.

In a smgeuig device for textile fabrics in combination, a casing, a burner surrounded b Said casin means for en )1 in a combustible mixture to said burner, an unperforated singeing body arranged in such relation to the burner as to be impinged on by the flame of the burner, and means for deflecting in an upward direction the hot gases spreading laterally "from said burner. In a singeing device for textile fabrics in com ination, a casing, a burner surrounded by said casing means for supplying a combustible mixture to said burner, a singeing body arranged in such relation to the burner as to be impinged on by the flame ot the burner and means for deflecting the hot issuing from said burner in an upward direction, said. means being so arranged as to partly surround said singeing body.

4. In a singeing device for textile fabrics in combination, a casing, a burner surrounded by said casing, means for supplying a combustible mixture to said burner, an exchangeable singeing body arranged in such relation to the burner as to be impinged on by the flame of the burner, and means for deflecting the hot gases issuing from said burner in an upward direction.

5. In a singeing device for textile fabrics in combination, a casing, a burner surrounded by said casing, means for supplying a combustible mixture to said burner, an exchangeable singeing body arranged in such relation to the burner as to be impinged on by the flame of the burner, and exchange-able plates secured to said casing for deflecting the hot gases issuing from said burner in an upward direction.

6. In a singeing device for textilet'abrics in combination, a casing, a burner surrounded by said casing, means for supplying a combustible mixture to said burner, means for conducting a fabric past said burner,

means for deflecting the hot gases issuing from said burner 111 an upward direction.

and means for deflectingsaid gases in a direction substantlallyparallel to said "fabric.

7. In a singeing. device for textile fabrics v in combination, a casing, a burner in the center of the top W ll of said casing means for supplying said burner with a mixture of gas and air, said top Wall being provided with openings around said burner, means for supplying said casing and said openings with secondary air means for deflecting in an upward direction the hot gases spreading laterally from said burner and spacing means above said burner for conducting a fabric past said burner. V

In testimony whereof I aflix my signature.

WALTER OSTHOFE. 

